Campbell's research and teaching specializations include: historical linguistics, American Indian languages, documentation and revitalization of endangered languages,[3] typology, sociolinguistics, linguistic anthropology, and Uralic languages.
Campbell, Lyle & Blair, Robert et al. (1971). Cakchiquel Basic Course. Provo: Peace Corps.
Campbell, Lyle (1977). Quichean Linguistic Prehistory (University of California Publications in Linguistics, 81). Berkeley: University of California Press.
Campbell, Lyle et al. (1978). Bibliography of Mayan Languages and Linguistics. Institute for Mesoamerican Studies, Publication 3. SUNY Albany.
Campbell, Lyle & Mithun, Marianne (Eds.) (1979). The Languages of Native America: An Historical and Comparative Assessment. Austin: University of Texas Press.
Campbell, Lyle (1980). El Idioma Cacaopera. (Colección Antropología e Historia, 16.) Administración del patrimonio cultural. San Salvador, El Salvador: Ministerio de Educación, Dirección de publicaciones.
Campbell, Lyle & Justeson, John (Eds.) (1984). Phoneticism in Mayan Hieroglyphic Writing. (Institute for Mesoamerican Studies, Pub. 9.) SUNY Albany/University of Texas Press.
Justeson, John, William Norman, Lyle Campbell & Terrence Kaufman) (1985). The Foreign Impact of Lowland Mayan Languages and Script. (Middle American Research Institute, publication 53.) New Orleans: Tulane University.
Campbell, Lyle (1988). The Linguistics of Southeast Chiapas. (Papers of the New World Archaeological Foundation, 51.) Provo, Utah.
Migliazza, Ermnesto & Lyle Campbell (1988). Panorama General de las Lenguas Indígenas en las Amerícas. Historia General de América, tomo 10. Instituto Panamericano de Geografía e Historia. Caracas, Venezuela.
Harris, Alice C. & Lyle Campbell (1995). Historical syntax in cross-linguistic perspective. Cambridge: Cambridge University Press. [Winner of the Leonard Bloomfield Book Award, 1998.]
Hill, Jane, P. J. Mistry, & Lyle Campbell (Eds.) (1997). The Life of Language: Papers in Linguistics in Honor of William Bright. Berlin: Mouton de Gruyter.
Campbell, Lyle (1997). American Indian languages: the historical linguistics of Native America. Oxford: Oxford University Press. ISBN0-19-509427-1. [Winner of the Linguistic Society of America's "Leonard Bloomfield Book Award," 2000, for the best book in linguistics for the previous two years. Named 1998 Outstanding Academic Book by Choice.]
Campbell, Lyle (Eds.) (2003). Grammaticalization: a critical assessment. (Special issue of Language Sciences, vol. 23, numbers 2–3.)
Campbell, Lyle et al. (2004). New Zealand English: its Origins and Evolution. Cambridge: Cambridge University Press.
Campbell, Lyle (2004). Historical Linguistics: an Introduction (2nd edition). Edinburgh: Edinburgh University Press, and Cambridge, MA: MIT Press.
Campbell, Lyle and William J. Poser (2008). Language Classification: History and Method. Cambridge: Cambridge University Press. ISBN978-0-521-88005-3.